Last updated: 7 October 2026
For most houses in the UK, the best time to paint outside is from late spring to early autumn, when the weather is mild and dry. But the calendar matters less than the conditions on the day, and a few dry days in any month can be enough. What matters is that the surface is dry, the temperature is right for the paint and the weather allows each coat to cure before rain. Here's what to look for, and when it's worth acting sooner.
Why the season matters
Exterior paint has to dry and cure while it's exposed to the weather. Rain in the first hours can wash or streak wet paint, damp surfaces stop it bonding, and cold slows drying and can stop the film forming properly. Warm, settled weather gives the best chance of an even finish that lasts, which is why spring and summer are the busiest seasons for exterior work.
Temperature and dryness
Check the tin. Most exterior paints state a minimum temperature for application, often around 5 degrees Celsius or higher, and say the surface must be dry and free from frost. It also helps if the temperature doesn't fall sharply overnight, because dew and cold can affect paint that hasn't fully dried. A dry spell of several days is better than a single sunny afternoon.
Too hot can be a problem too
Painting in strong direct sun can dry the paint too fast, leaving brush marks, a poor bond and sometimes blistering. On a hot day, it's better to follow the shade round the house, work early or late and avoid painting hot surfaces. The best conditions are bright, dry and mild, not baking.
Why late spring to early autumn works best
In these months, days are long, surfaces dry out quickly and there are more settled spells, so there's more time to prepare, paint and let coats dry. Longer days also mean more can be done in a day, and the preparation, such as cleaning and repairs, dries out properly beforehand. It's also the easiest time to arrange scaffolding or access equipment.
What about autumn and winter?
Autumn can still work if there's a run of dry weather, but days shorten, mornings are damp and the risk of rain and frost rises. Winter is usually the hardest time for exterior painting. That doesn't mean nothing can be done: some jobs, such as repairs, can go ahead, and a good decorator will plan the painting for a better window.
When it's worth acting sooner
Don't wait for perfect weather if there's a real problem. Rotten or exposed timber, flaking paint that has left bare wood, damaged render or a leak should be dealt with soon, because they get worse in wet weather and the repair costs rise. Temporary protection or repair can hold things until the paint can go on properly.
Preparation depends on the weather too
Good exterior work starts with cleaning, scraping, sanding, repairing and priming, and all of that needs dry surfaces. Algae and moss need treating and time to clear before painting. Giving the walls time to dry after washing or after a wet spell is part of the schedule, not an optional extra. That's one reason quotes give a start window, not a fixed date.
Booking ahead
Decorators are often busier in spring and summer, the best exterior season. If you'd like exterior work done in good weather, it's worth getting quotes in late winter or early spring and agreeing a start window instead of waiting until the sun comes out. Be prepared for dates to move if the weather doesn't cooperate.
What to check before the work starts
Ask which paints will be used and what they need, such as a minimum temperature or a dry surface. Ask what happens if the weather turns, and how any delay will be communicated. If your home in Sutton Coldfield is listed or in a conservation area, check whether consent is needed for changes to colour or materials before you book.
Thinking about exterior painting? Use the quote form to tell us about the property and what needs doing, and attach photos if you can. We'll come back with a free written quote and a realistic start window.
